Rep Power: 0

...good engine?

 
Rep Power: 0

I'm assuming that by asking "which one more save" you might be asking about fuel efficiency. If that is the case, then you can check the fuel efficiency of many cars at http://www.fueleconomy.gov/ on the left side of the site, select "Compare Side By Side" to choose different cars to compare against each other in a variety of ways.As far as engines go, and finding comparisons between cars on points like this, the April issue of Consumer Reports is always all about cars. Your library will have a subscription to Consumer Reports, or access to the information, for the current year, and likely for many previous years, to get past comparisons if you're planning on buying a used car.Hope this helps,Sincerely,Your friendly neighborhood librarian